Castle Biosciences Inc

CSTLNASDAQ · USD
32.52USD-1.68 (-4.92%)
6610

Castle Biosciences Inc (CSTL) Implied Volatility Current

CSTL's 30 day implied volatility is 86.71%, with an IV Rank of 83.33%. This is a high IV Rank versus the past year, meaning Castle Biosciences Inc options are relatively expensive and currently favor sellers. CSTL's 30 day historical volatility sits at 56.48%, which means implied volatility is running 30.23 points above historical volatility, as of Nov 5, 2026.

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Tracking CSTL implied volatility helps you spot when Castle Biosciences Inc options are historically cheap or expensive, and where the best trades are hiding. When CSTL IV rises, premiums increase and sellers get more attractive pricing, and when it drops, buyers find cheaper contracts. Use our scanner to monitor CSTL implied volatility current levels in real time and filter for high probability trades.

Implied volatility is derived from option prices and represents the annualized expected move of a stock. Tracking CSTL IV rank helps you see whether CSTL's implied volatility is historically high or low, since IV rank compares today's reading against the past year's range. A high rank signals relatively expensive premiums and tends to favor sellers, a low rank signals relatively cheap premiums and tends to favor buyers.

Castle Biosciences, Inc., a commercial-stage diagnostics company, focuses to provide diagnostic and prognostic testing services for dermatological cancers. Its lead product is DecisionDx-Melanoma, a multi-gene expression profile (GEP) test to identify the risk of metastasis for patients diagnosed with invasive cutaneous melanoma. The company also offers DecisionDx-UM test, a proprietary GEP test that predicts the risk of metastasis for patients with uveal melanoma, a rare eye cancer; DecisionDx-SCC, a proprietary 40-gene expression profile test that uses an individual patient's tumor biology to predict individual risk of squamous cell carcinoma metastasis for patients with one or more risk factors; and DecisionDx DiffDx-Melanoma and myPath Melanoma, a proprietary GEP test to diagnose suspicious pigmented lesions.

Implied Volatility

IV Rank
83.33%IV Rank
High

IV is highly elevated. Premiums are expensive, strongly favoring sellers.

Implied Volatility (30d)86.71%

IV Rank83.33%

Historical Volatility (30d)56.48%

IV Minus HV+30.23%

As of Nov 5, 2026

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